57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
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* Architecture specific parts of the Floppy driver
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1995 - 2000 Ralf Baechle
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*/
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#ifndef _ASM_FLOPPY_H
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#define _ASM_FLOPPY_H
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#include <linux/dma-mapping.h>
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static inline void fd_cacheflush(char * addr, long size)
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{
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dma_cache_sync(NULL, addr, size, DMA_BIDIRECTIONAL);
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}
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#define MAX_BUFFER_SECTORS 24
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/*
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* And on Mips's the CMOS info fails also ...
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*
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* FIXME: This information should come from the ARC configuration tree
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* or wherever a particular machine has stored this ...
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*/
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#define FLOPPY0_TYPE fd_drive_type(0)
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#define FLOPPY1_TYPE fd_drive_type(1)
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#define FDC1 fd_getfdaddr1()
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#define N_FDC 1 /* do you *really* want a second controller? */
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#define N_DRIVE 8
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/*
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* The DMA channel used by the floppy controller cannot access data at
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* addresses >= 16MB
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*
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* Went back to the 1MB limit, as some people had problems with the floppy
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* driver otherwise. It doesn't matter much for performance anyway, as most
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* floppy accesses go through the track buffer.
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*
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* On MIPSes using vdma, this actually means that *all* transfers go thru
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* the * track buffer since 0x1000000 is always smaller than KSEG0/1.
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* Actually this needs to be a bit more complicated since the so much different
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* hardware available with MIPS CPUs ...
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*/
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#define CROSS_64KB(a, s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64)
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#define EXTRA_FLOPPY_PARAMS
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#include <floppy.h>
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#endif /* _ASM_FLOPPY_H */
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